CORE-1636 Case sensitivity issue with tableExists precondition

Improved mssql case sensitivity check and ensured jdbc schema and catalog names have their cases fixed
CORE-1636 Case sensitivity issue with tableExists precondition

Improved mssql case sensitivity check and ensured jdbc schema and catalog names have their cases fixed
CORE-1595 Schema version incompatibility is logged as INFO instead of WARN
CORE-1581 modifyDataType ignores additional info of newDataType when using something like "TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP"
CORE-1531 includeAll with relativeToChangeLogFile fails under certain conditions
CORE-1571 updateDatabase can't find a changelog

ResourceAccessor needs to handle single file lookups, not just directory lookups